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Use a Mailbox* with Python bindings.
[simgrid.git] / src / bindings / python / simgrid_python.cpp
index d5ed159..ba89c6e 100644 (file)
@@ -1,17 +1,26 @@
-/* Copyright (c) 2018. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2018-2019. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
+#ifdef _WIN32
+#warning Try to work around https://bugs.python.org/issue11566
+#define _hypot hypot
+#endif
+
+#include <pybind11/functional.h>
+#include <pybind11/pybind11.h> // Must come before our own stuff
+#include <pybind11/stl.h>
+
 #include "src/kernel/context/Context.hpp"
+#include <simgrid/Exception.hpp>
 #include <simgrid/s4u/Actor.hpp>
+#include <simgrid/s4u/Comm.hpp>
+#include <simgrid/s4u/Exec.hpp>
 #include <simgrid/s4u/Engine.hpp>
 #include <simgrid/s4u/Host.hpp>
 #include <simgrid/s4u/Mailbox.hpp>
 
-#include <pybind11/pybind11.h>
-#include <pybind11/stl.h>
-
 #include <memory>
 #include <string>
 #include <vector>
@@ -31,7 +40,9 @@ namespace {
 
 static std::string get_simgrid_version()
 {
-  int major, minor, patch;
+  int major;
+  int minor;
+  int patch;
   sg_version_get(&major, &minor, &patch);
   return simgrid::xbt::string_printf("%i.%i.%i", major, minor, patch);
 }
@@ -48,7 +59,7 @@ PYBIND11_MODULE(simgrid, m)
   m.attr("simgrid_version") = simgrid_version;
 
   // Internal exception used to kill actors and sweep the RAII chimney (free objects living on the stack)
-  py::object pyStopRequestEx = py::register_exception<simgrid::kernel::context::Context::StopRequest>(m, "ActorKilled");
+  py::object pyForcefulKillEx = py::register_exception<simgrid::ForcefulKillException>(m, "ActorKilled");
 
   /* this_actor namespace */
   void (*sleep_for_fun)(double) = &simgrid::s4u::this_actor::sleep_for; // pick the right overload
@@ -56,11 +67,13 @@ PYBIND11_MODULE(simgrid, m)
 
   py::module m2 = m.def_submodule("this_actor", "Bindings of the s4u::this_actor namespace.");
   m2.def("info", [](char* s) { XBT_INFO("%s", s); }, "Display a logging message of default priority.");
+  m2.def("error", [](char* s) { XBT_ERROR("%s", s); }, "Display a logging message of 'error' priority.");
   m2.def("execute", py::overload_cast<double, double>(&simgrid::s4u::this_actor::execute),
          "Block the current actor, computing the given amount of flops at the given priority, see :cpp:func:`void "
          "simgrid::s4u::this_actor::execute(double, double)`",
          py::arg("flops"), py::arg("priority") = 1);
-  m2.def("get_host", &simgrid::s4u::this_actor::get_host, "Retrives host on which the current actor is located");
+  m2.def("exec_init", [](double flops){return simgrid::s4u::this_actor::exec_init(flops);});
+  m2.def("get_host", &simgrid::s4u::this_actor::get_host, "Retrieves host on which the current actor is located");
   m2.def("migrate", &simgrid::s4u::this_actor::migrate, "Moves the current actor to another host, see :cpp:func:`void simgrid::s4u::this_actor::migrate()`",
       py::arg("dest"));
   m2.def("sleep_for", sleep_for_fun,
@@ -70,7 +83,19 @@ PYBIND11_MODULE(simgrid, m)
   m2.def("suspend", &simgrid::s4u::this_actor::suspend, "Suspend the current actor, that is blocked until resume()ed by another actor. see :cpp:func:`void simgrid::s4u::this_actor::suspend`");
   m2.def("yield_", &simgrid::s4u::this_actor::yield,
          "Yield the actor, see :cpp:func:`void simgrid::s4u::this_actor::yield()`");
-  m2.def("exit", &simgrid::s4u::this_actor::exit);
+  m2.def("exit", &simgrid::s4u::this_actor::exit, "kill the current actor");
+  m2.def("on_exit",
+         [](py::object fun) {
+           ActorPtr act = Actor::self();
+           simgrid::s4u::this_actor::on_exit([act, fun](bool /*failed*/) {
+             try {
+               fun();
+             } catch (py::error_already_set& e) {
+               xbt_die("Error while executing the on_exit lambda: %s", e.what());
+             }
+           });
+         },
+         "");
 
   /* Class Engine */
   py::class_<Engine>(m, "Engine", "Simulation Engine, see :ref:`class s4u::Engine <API_s4u_Engine>`")
@@ -84,8 +109,8 @@ PYBIND11_MODULE(simgrid, m)
         // Currently this can be dangling, we should wrap this somehow.
         return new simgrid::s4u::Engine(&argc, argv.get());
       }))
+      .def_static("get_clock", &Engine::get_clock, "The simulation time, ie the amount of simulated seconds since the simulation start.")
       .def("get_all_hosts", &Engine::get_all_hosts, "Returns the list of all hosts found in the platform")
-      .def("get_clock", &Engine::get_clock, "Retrieve the simulation time")
       .def("load_platform", &Engine::load_platform,
            "Load a platform file describing the environment, see :cpp:func:`simgrid::s4u::Engine::load_platform()`")
       .def("load_deployment", &Engine::load_deployment,
@@ -93,10 +118,10 @@ PYBIND11_MODULE(simgrid, m)
            ":cpp:func:`simgrid::s4u::Engine::load_deployment()`")
       .def("run", &Engine::run, "Run the simulation")
       .def("register_actor",
-           [pyStopRequestEx](Engine*, std::string name, py::object fun_or_class) {
+           [pyForcefulKillEx](Engine*, const std::string& name, py::object fun_or_class) {
              simgrid::simix::register_function(
-                 name, [pyStopRequestEx, fun_or_class](std::vector<std::string> args) -> simgrid::simix::ActorCode {
-                   return [pyStopRequestEx, fun_or_class, args]() {
+                 name, [pyForcefulKillEx, fun_or_class](std::vector<std::string> args) -> simgrid::simix::ActorCode {
+                   return [pyForcefulKillEx, fun_or_class, args]() {
                      try {
                        /* Convert the std::vector into a py::tuple */
                        py::tuple params(args.size() - 1);
@@ -109,9 +134,9 @@ PYBIND11_MODULE(simgrid, m)
                        if (py::isinstance<py::function>(res))
                          res();
                      } catch (py::error_already_set& ex) {
-                       if (ex.matches(pyStopRequestEx)) {
+                       if (ex.matches(pyForcefulKillEx)) {
                          XBT_VERB("Actor killed");
-                         /* Stop here that StopRequest exception which was meant to free the RAII stuff on the stack */
+                         /* Stop here that ForcefulKill exception which was meant to free the RAII stuff on the stack */
                        } else {
                          throw;
                        }
@@ -124,45 +149,95 @@ PYBIND11_MODULE(simgrid, m)
   /* Class Host */
   py::class_<simgrid::s4u::Host, std::unique_ptr<Host, py::nodelete>>(m, "Host", "Simulation Engine, see :ref:`class s4u::Host <API_s4u_Host>`")
       .def("by_name", &Host::by_name, "Retrieves a host from its name, or die")
+      .def("get_pstate_count", &Host::get_pstate_count, "Retrieve the cound of defined pstate levels, see :cpp:func:`simgrid::s4u::Host::get_pstate_count`")
+      .def("get_pstate_speed", &Host::get_pstate_speed, "Retrieve the maximal speed at the given pstate, see :cpp:func:`simgrid::s4u::Host::get_pstate_speed`")
+      .def_property("pstate", &Host::get_pstate, &Host::set_pstate, "The current pstate")
+
       .def("current", &Host::current, "Retrieves the host on which the running actor is located, see :cpp:func:`simgrid::s4u::Host::current()`")
       .def_property_readonly("name", [](Host* self) -> const std::string {
           return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
         }, "The name of this host")
+      .def_property_readonly("load", &Host::get_load,
+          "Returns the current computation load (in flops per second). This is the currently achieved speed. See :cpp:func:`simgrid::s4u::Host::get_load()`")
       .def_property_readonly("speed", &Host::get_speed,
-          "The peak computing speed in flops/s at the current pstate, taking the external load into account, see :cpp:func:`simgrid::s4u::Host::get_speed()`");
+          "The peak computing speed in flops/s at the current pstate, taking the external load into account. This is the max potential speed. See :cpp:func:`simgrid::s4u::Host::get_speed()`");
 
   /* Class Mailbox */
   py::class_<simgrid::s4u::Mailbox, std::unique_ptr<Mailbox, py::nodelete>>(m, "Mailbox", "Mailbox, see :ref:`class s4u::Mailbox <API_s4u_Mailbox>`")
+      .def("__str__", [](Mailbox* self) -> const std::string {
+         return std::string("Mailbox(") + self->get_cname() + ")";
+      }, "Textual representation of the Mailbox`")
       .def("by_name", &Mailbox::by_name, "Retrieve a Mailbox from its name, see :cpp:func:`simgrid::s4u::Mailbox::by_name()`")
       .def_property_readonly("name", [](Mailbox* self) -> const std::string {
          return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
       }, "The name of that mailbox, see :cpp:func:`simgrid::s4u::Mailbox::get_name()`")
-      .def("put", [](Mailbox self, py::object data, int size) {
+      .def("put", [](Mailbox* self, py::object data, int size) {
         data.inc_ref();
-        self.put(data.ptr(), size);
+        self->put(data.ptr(), size);
       }, "Blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put(void*, uint64_t)`")
-      .def("get", [](Mailbox self) -> py::object {
-         py::object data = pybind11::reinterpret_steal<py::object>(pybind11::handle(static_cast<PyObject*>(self.get())));
+      .def("put_async", [](Mailbox* self, py::object data, int size) -> simgrid::s4u::CommPtr {
+        data.inc_ref();
+        return self->put_async(data.ptr(), size);
+      }, "Non-blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put_async(void*, uint64_t)`")
+      .def("get", [](Mailbox* self) -> py::object {
+         py::object data = pybind11::reinterpret_steal<py::object>(pybind11::handle(static_cast<PyObject*>(self->get())));
          data.dec_ref();
          return data;
       }, "Blocking data reception, see :cpp:func:`void* simgrid::s4u::Mailbox::get()`");
 
+  /* Class Comm */
+  py::class_<simgrid::s4u::Comm, simgrid::s4u::CommPtr>(m, "Comm",
+                                                        "Communication, see :ref:`class s4u::Comm <API_s4u_Comm>`")
+      .def("test", [](simgrid::s4u::CommPtr self) { return self->test(); },
+           "Test whether the communication is terminated, see :cpp:func:`simgrid::s4u::Comm::test()`")
+      .def("wait", [](simgrid::s4u::CommPtr self) { self->wait(); },
+           "Block until the completion of that communication, see :cpp:func:`simgrid::s4u::Comm::wait()`")
+      .def("wait_all", [](std::vector<simgrid::s4u::CommPtr>* comms) { simgrid::s4u::Comm::wait_all(comms); },
+           "Block until the completion of all communications in the list, see "
+           ":cpp:func:`simgrid::s4u::Comm::wait_all()`")
+      .def(
+          "wait_any", [](std::vector<simgrid::s4u::CommPtr>* comms) { return simgrid::s4u::Comm::wait_any(comms); },
+          "Block until the completion of any communication in the list and return the index of the terminated one, see "
+          ":cpp:func:`simgrid::s4u::Comm::wait_any()`");
+  py::class_<simgrid::s4u::Exec, simgrid::s4u::ExecPtr>(m, "Exec", "Execution, see :ref:`class s4u::Exec <API_s4u_Exec>`")
+      .def_property_readonly("remaining", [](simgrid::s4u::ExecPtr self) { return self->get_remaining(); },
+          "Amount of flops that remain to be computed until completion, see :cpp:func:`simgrid::s4u::Exec::get_remaining()`")
+      .def_property_readonly("remaining_ratio", [](simgrid::s4u::ExecPtr self) { return self->get_remaining_ratio(); },
+          "Amount of work remaining until completion from 0 (completely done) to 1 (nothing done yet). See :cpp:func:`simgrid::s4u::Exec::get_remaining_ratio()`")
+      .def_property("host",
+                    [](simgrid::s4u::ExecPtr self) {
+                        simgrid::s4u::ExecSeqPtr seq = boost::dynamic_pointer_cast<simgrid::s4u::ExecSeq>(self);
+                        if (seq != nullptr)
+                            return seq->get_host();
+                        xbt_throw_unimplemented(__FILE__, __LINE__, "host of parallel executions is not implemented in python yet.");
+                    },
+                    [](simgrid::s4u::ExecPtr self, simgrid::s4u::Host* host) { self->set_host(host); },
+          "Host on which this execution runs. See :cpp:func:`simgrid::s4u::ExecSeq::get_host()`")
+      .def("test", [](simgrid::s4u::ExecPtr self) { return self->test(); },
+          "Test whether the execution is terminated, see :cpp:func:`simgrid::s4u::Exec::test()`")
+      .def("cancel", [](simgrid::s4u::ExecPtr self) { self->cancel(); },
+          "Cancel that execution, see :cpp:func:`simgrid::s4u::Exec::cancel()`")
+      .def("start", [](simgrid::s4u::ExecPtr self) { return self->start(); },
+          "Start that execution, see :cpp:func:`simgrid::s4u::Exec::start()`")
+      .def("wait", [](simgrid::s4u::ExecPtr self) { return self->wait(); },
+          "Block until the completion of that execution, see :cpp:func:`simgrid::s4u::Exec::wait()`");
+
   /* Class Actor */
   py::class_<simgrid::s4u::Actor, ActorPtr>(m, "Actor",
                                             "An actor is an independent stream of execution in your distributed "
                                             "application, see :ref:`class s4u::Actor <API_s4u_Actor>`")
 
       .def("create",
-           [pyStopRequestEx](py::str name, py::object host, py::object fun, py::args args) {
+           [pyForcefulKillEx](py::str name, py::object host, py::object fun, py::args args) {
 
-             return simgrid::s4u::Actor::create(name, host.cast<Host*>(), [fun, args, pyStopRequestEx]() {
+             return simgrid::s4u::Actor::create(name, host.cast<Host*>(), [fun, args, pyForcefulKillEx]() {
 
                try {
                  fun(*args);
                } catch (py::error_already_set& ex) {
-                 if (ex.matches(pyStopRequestEx)) {
+                 if (ex.matches(pyForcefulKillEx)) {
                    XBT_VERB("Actor killed");
-                   /* Stop here that StopRequest exception which was meant to free the RAII stuff on the stack */
+                   /* Stop here that ForcefulKill exception which was meant to free the RAII stuff on the stack */
                  } else {
                    throw;
                  }
@@ -171,17 +246,19 @@ PYBIND11_MODULE(simgrid, m)
            },
            "Create an actor from a function or an object, see :cpp:func:`simgrid::s4u::Actor::create()`")
       .def_property("host", &Actor::get_host, &Actor::migrate, "The host on which this actor is located")
+      .def_property_readonly("pid", &Actor::get_pid, "The PID (unique identifier) of this actor.")
+      .def("by_pid", &Actor::by_pid, "Retrieve an actor by its PID")
       .def("daemonize", &Actor::daemonize,
            "This actor will be automatically terminated when the last non-daemon actor finishes, see :cpp:func:`void "
            "simgrid::s4u::Actor::daemonize()`")
       .def("join", py::overload_cast<double>(&Actor::join),
            "Wait for the actor to finish, see :cpp:func:`void simgrid::s4u::Actor::join(double)`", py::arg("timeout"))
+      .def("kill", [](ActorPtr act) { act->kill(); }, "Kill that actor")
+      .def("kill_all", &Actor::kill_all, "Kill all actors but the caller.")
       .def("migrate", &Actor::migrate,
            "Moves that actor to another host, see :cpp:func:`void simgrid::s4u::Actor::migrate()`", py::arg("dest"))
       .def("self", &Actor::self, "Retrieves the current actor, see :cpp:func:`void simgrid::s4u::Actor::self()`")
-      .def("suspend", &Actor::suspend,
-           "Suspend that actor, that is blocked until resume()ed by another actor. See :cpp:func:`void "
-           "simgrid::s4u::Actor::suspend()`")
-      .def("resume", &Actor::resume,
-           "Resume that actor, that was previously suspend()ed. See :cpp:func:`void simgrid::s4u::Actor::suspend()`");
+      .def("is_suspended", &Actor::is_suspended, "Returns True if that actor is currently suspended.")
+      .def("suspend", &Actor::suspend, "Suspend that actor, that is blocked until resume()ed by another actor.")
+      .def("resume", &Actor::resume, "Resume that actor, that was previously suspend()ed.");
 }